Research And Design Of Surface Rust Removal Equipment For Slender Steel Pipe

As an efficient,low-energy,safe and reliable gas-liquid transportation tool,metal pipelines are widely used in industrial and civil fields,and are closely related to our lives.Most metal pipes need anti-corrosion treatment at the beginning of use,rust removal as an important part of anti-corrosion treatment,rust removal quality is one of the key factors affecting the service life of the anti-corrosion layer.Most of the existing steel pipe rust removal equipment is only suitable for rust removal of steel pipes with a diameter of more than 100 mm,for slender steel pipes(length greater than 1000 mm,diameter within 100 mm)rust removal is still done manually,manual rust removal has labor intensity,low efficiency,poor rust removal effect,pollution of the environment and many other problems,obviously can not meet the growing demand for slender steel pipe rust removal work.In view of the above problems,this paper designs a set of mechatronic slender steel pipe surface rust removal equipment.On the basis of analyzing and understanding the technical scheme of the existing steel pipe rust removal equipment,combined with the characteristics of rust removal objects and design requirements,the overall mechanical structure scheme is designed and selected,and the realization scheme of the main function is formulated and selected.Then,Solidworks was used to establish a three-dimensional model of the feeding device,conveying device,pressing device,discharging device,dust removal device and other components,calculated and determined the model of each drive element,and conducted dynamic and kinematic analysis of the conveying device,verified the feasibility of the conveying scheme,and finally completed the assembly of the whole model.In order to ensure the rationality of the mechanical structure design,ANSYS Workbench was used to conduct static analysis of key components such as lifting plate,lifting frame,fixed base,etc,and obtained the deformation and stress of the three under the corresponding working conditions,and the analysis showed that the structural design of each component was reasonable.The structure of the fixed base with large redundancy was optimized,and the strength and stiffness of the optimized fixed base were sufficient,and the overall mass was reduced by 21.73%,and the optimization effect was remarkable.Based on the modal analysis theory,the modal analysis of the frame susceptible to vibration is carried out,and it can be seen from the comparison of the natural frequency and the excitation frequency of the equipment that the frame will not resonate during the working process,and the equipment can operate stably.According to the functional requirements of the control system,the overall scheme of the control system with Mitsubishi FX3 U PLC as the control core was determined.PLC uses RS485 communication to realize the communication hardware connection between the touch screen and the inverter,based on the servo control principle and control requirements,the servo motor position control mode drive system hardware is designed,and the design of the pneumatic control loop and the selection of pneumatic components are realized,the I/O interface of the PLC is assigned,and the control system circuit is designed,and the control system hardware platform with the touch screen as the upper computer and the PLC as the lower computer is built.On the basis of hardware,GX Works2 and MCGS configuration software are used to realize the development of PLC program and the design of touch screen interface,and finally the rationality of the control system design is verified by debugging the control system.The final design of the slender steel pipe surface rust removal equipment has simple structure,complete functions,easy operation,high level of automation,and the basic performance has met the design requirements.